PolyAPTAC, or poly (acrylamido-N-propyltrimethylammonium chloride), is an organic polymer. It is water-soluble, forms gels when cross linked, and acts as a cationic polyelectrolyte. It can be used for ion exchange resins. It can form hydrogels.
PolyMAPTAC, or poly[(3-(methacryloylamino)-propyl] trimethylammonium chloride), is similar.
References
Sutton, Adam T.; Read, Emmanuelle; Maniego, Alison R.; Thevarajah, Joel J.; Marty, Jean-Daniel; Destarac, Mathias; Gaborieau, Marianne; Castignolles, Patrice (2014-12-12). "Purity of double hydrophilic block copolymers revealed by capillary electrophoresis in the critical conditions" (PDF). Journal of Chromatography A. 1372: 187–195. doi:10.1016/j.chroma.2014.10.105. ISSN 0021-9673. PMID 25465016. S2CID 24827972. https://hal.science/hal-04036765/file/2014%20JChromatogrA%20accepted.pdf ↩